SC440MLTRT Semtech, SC440MLTRT Datasheet - Page 5

• Manufacturer Part Number: SC440MLTRT
• Description: IC LED DRVR WHITE BCKLGT 24-MLPQ
• Manufacturer: Semtech
• Type: Backlight, White LEDr

Specifications of SC440MLTRT

• Constant Current: Yes
• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 6
• Internal Driver: Yes
• Type - Primary: Backlight
• Frequency: 640kHz ~ 960kHz
• Voltage - Supply: 4.5 V ~ 21 V
• Voltage - Output: 40V
• Mounting Type: Surface Mount
• Package / Case: 24-MLPQ
• Current - Output / Channel: 30mA
• Internal Switch(s): Yes
• Efficiency: 91%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Operating Temperature: -
• Other names: SC440MLTR

Typical Characteristics
© 2010 Semtech Corp.
1.55
1.45
4.4
4.3
4.2
4.1
1.6
1.5
1.4
550
500
450
400
350
300
250
200
150
100
4
-40
-40
5
OVPIN Threshold Voltage vs. Temperature
IO Pin Sense Voltage vs. LED Current
UVLO Threshold vs. Temperature
-20
-20
Falling
VIN = 12V
10
Vin =12V, 8 LEDs per string
0
0
NOT RECOMMENDED FOR NEW DESIGNS: SEE SC440A
LED Current (mA)
Temperature (°C)
Temperature (°C)
15
20
20
20
40
40
Rising
60
60
25
80
80
30
5.5
4.5
3.5
805
795
785
775
765
3.5
2.5
1.5
5
4
3
-40
4
3
2
1
-40
-40
VIN =12V
Switching Frequency vs. Temperature
-20
-20
COMP Current vs. Temperature
-20
SS Current vs. Temperature
0
0
0
Source
Temperature (°C)
Temperature (°C)
Temperature (°C)
Source
20
20
20
VIN = 4.5V
VIN = 21V
Sink
40
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40
40
60
60
60
SC440
Sink
80
80
80
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